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adrien:feature/acme
adrien:meta/formating
adrien:main
Deuxfleurs:docker-7
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24
.drone.yml Normal file
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---
kind: pipeline
name: default
workspace:
base: /drone/diplonat
steps:
- name: code style
image: rust:1.47
commands:
- rustup component add rustfmt
- cargo fmt --all -- --check
# - name: code quality
# image: rust:1.47
# commands:
# - cargo clippy -- --deny warnings
# - name: test
# image: rust:1.47
# commands:
# - cargo build --verbose --all
# - cargo test --verbose --all

4
.gitignore vendored
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target target/
result
result-bin
*.swp *.swp
.env .env

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.rustfmt.toml Normal file
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hard_tabs = false
tab_spaces = 2

26
.woodpecker.yml
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when:
event:
- push
- pull_request
- tag
- cron
- manual
steps:
- name: check formatting
image: nixpkgs/nix:nixos-22.05
environment:
NIX_PATH: 'nixpkgs=channel:nixos-22.05'
commands:
- nix-shell -p cargo -p rustfmt --run 'cargo fmt -- --check'
- name: build
image: nixpkgs/nix:nixos-22.05
commands:
- nix build --extra-experimental-features nix-command --extra-experimental-features flakes .#debug.x86_64-linux.diplonat
- name: test
image: nixpkgs/nix:nixos-22.05
commands:
- nix build --extra-experimental-features nix-command --extra-experimental-features flakes .#test.x86_64-linux.diplonat
- ./result-bin/bin/diplonat-*

23
CONTRIBUTING.md
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@ -8,13 +8,12 @@
#### Installing rustfmt #### Installing rustfmt
You must install a very recent version of `rustfmt` through rust nightly You can run `rustfmt` with Rust 1.24 and above.
To install: To install:
``` ```
rustup toolchain install nightly-x86_64-unknown-linux-gnu rustup component add rustfmt
rustup component add rustfmt --toolchain nightly
``` ```
#### Usage #### Usage
@ -22,24 +21,14 @@ rustup component add rustfmt --toolchain nightly
To run on Diplonat, launch the following in the root directory: To run on Diplonat, launch the following in the root directory:
``` ```
cargo +nightly fmt cargo fmt --all
``` ```
This will format the whole repository using the settigs defined in [`.rustfmt.toml`](./.rustfmt.toml). This will format the whole repository using the settigs defined in [`.rustfmt.toml`](./.rustfmt.toml): soft tabs of 2 spaces.
#### Auto-format code #### Auto-format code
You can automate formatting in a number of ways: You can automate formatting in a number of ways:
[Setup your IDE to use `rustfmt`](https://github.com/rust-lang/rustfmt#running-rustfmt-from-your-editor). * [Setup your IDE to use `rustfmt`](https://github.com/rust-lang/rustfmt#running-rustfmt-from-your-editor).
* Setup a git hook to run `rustfmt` before each commit.
Setup a git hook to run `rustfmt` before each commit:
```bash
cat <<EOF > .git/hooks/pre-commit
#!/bin/bash
cargo +nightly fmt
EOF
chmod +x .git/hooks/pre-commit
```

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8
Cargo.toml
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@ -10,15 +10,13 @@ edition = "2018"
anyhow = "1.0.28" anyhow = "1.0.28"
envy = "0.4" envy = "0.4"
futures = "0.3.5" futures = "0.3.5"
get_if_addrs = "0.5" igd = { version = "0.10.0", features = ["aio"] }
igd = { version = "0.12.0", features = ["aio"] }
iptables = "0.2.2" iptables = "0.2.2"
log = "0.4" log = "0.4"
pretty_env_logger = "0.4" pretty_env_logger = "0.4"
regex = "1" regex = "1"
reqwest = { version = "0.11", default-features = false, features = ["json", "rustls-tls-manual-roots" ] } reqwest = { version = "0.10", features = ["json"] }
serde = { version = "1.0.107", features = ["derive"] } serde = { version = "1.0.107", features = ["derive"] }
serde-lexpr = "0.1.1" serde-lexpr = "0.1.1"
serde_json = "1.0.53" serde_json = "1.0.53"
tokio = { version = "1", features = ["sync", "rt-multi-thread", "net", "macros"] } tokio = "0.2"
stun-client = "0.1.2"

4
Dockerfile
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@ -1,7 +1,7 @@
FROM rust:1.69-bullseye as builder FROM debian:bullseye-slim as builder
RUN apt-get update && \ RUN apt-get update && \
apt-get install -y libssl-dev pkg-config apt-get install -y rustc cargo libssl-dev pkg-config
WORKDIR /srv WORKDIR /srv

661
LICENSE
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@ -1,661 +0,0 @@
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not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Remote Network Interaction; Use with the GNU General Public License.
Notwithstanding any other provision of this License, if you modify the
Program, your modified version must prominently offer all users
interacting with it remotely through a computer network (if your version
supports such interaction) an opportunity to receive the Corresponding
Source of your version by providing access to the Corresponding Source
from a network server at no charge, through some standard or customary
means of facilitating copying of software. This Corresponding Source
shall include the Corresponding Source for any work covered by version 3
of the GNU General Public License that is incorporated pursuant to the
following paragraph.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the work with which it is combined will remain governed by version
3 of the GNU General Public License.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU Affero General Public License from time to time. Such new versions
will be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU Affero General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU Affero General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU Affero General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer
network, you should also make sure that it provides a way for users to
get its source. For example, if your program is a web application, its
interface could display a "Source" link that leads users to an archive
of the code. There are many ways you could offer source, and different
solutions will be better for different programs; see section 13 for the
specific requirements.
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<https://www.gnu.org/licenses/>.

6
README.md
View file

@ -1,8 +1,6 @@
Diplonat Diplonat
======== ========
[![status-badge](https://woodpecker.deuxfleurs.fr/api/badges/40/status.svg)](https://woodpecker.deuxfleurs.fr/repos/40)
## Feature set ## Feature set
* [X] (Re)Configure NAT via UPNP/IGD (prio: high) * [X] (Re)Configure NAT via UPNP/IGD (prio: high)
@ -88,7 +86,3 @@ consul services register -name=fake_dns -tag="(diplonat (udp_port 53) (tcp_port
consul services register -name=fake_irc -tag="(diplonat (udp_port 6667 6666))" consul services register -name=fake_irc -tag="(diplonat (udp_port 6667 6666))"
consul services -id=example consul services -id=example
``` ```
## License
This software is published under the AGPLv3 license.

108
flake.lock
View file

@ -1,108 +0,0 @@
{
"nodes": {
"cargo2nix": {
"inputs": {
"flake-compat": "flake-compat",
"flake-utils": "flake-utils",
"nixpkgs": [
"nixpkgs"
],
"rust-overlay": "rust-overlay"
},
"locked": {
"lastModified": 1666087781,
"narHash": "sha256-trKVdjMZ8mNkGfLcY5LsJJGtdV3xJDZnMVrkFjErlcs=",
"owner": "Alexis211",
"repo": "cargo2nix",
"rev": "a7a61179b66054904ef6a195d8da736eaaa06c36",
"type": "github"
},
"original": {
"owner": "Alexis211",
"repo": "cargo2nix",
"rev": "a7a61179b66054904ef6a195d8da736eaaa06c36",
"type": "github"
}
},
"flake-compat": {
"flake": false,
"locked": {
"lastModified": 1650374568,
"narHash": "sha256-Z+s0J8/r907g149rllvwhb4pKi8Wam5ij0st8PwAh+E=",
"owner": "edolstra",
"repo": "flake-compat",
"rev": "b4a34015c698c7793d592d66adbab377907a2be8",
"type": "github"
},
"original": {
"owner": "edolstra",
"repo": "flake-compat",
"type": "github"
}
},
"flake-utils": {
"locked": {
"lastModified": 1659877975,
"narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1665657542,
"narHash": "sha256-mojxNyzbvmp8NtVtxqiHGhRfjCALLfk9i/Uup68Y5q8=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "a3073c49bc0163fea6a121c276f526837672b555",
"type": "github"
},
"original": {
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "a3073c49bc0163fea6a121c276f526837672b555",
"type": "github"
}
},
"root": {
"inputs": {
"cargo2nix": "cargo2nix",
"nixpkgs": "nixpkgs"
}
},
"rust-overlay": {
"inputs": {
"flake-utils": [
"cargo2nix",
"flake-utils"
],
"nixpkgs": [
"cargo2nix",
"nixpkgs"
]
},
"locked": {
"lastModified": 1664247556,
"narHash": "sha256-J4vazHU3609ekn7dr+3wfqPo5WGlZVAgV7jfux352L0=",
"owner": "oxalica",
"repo": "rust-overlay",
"rev": "524db9c9ea7bc7743bb74cdd45b6d46ea3fcc2ab",
"type": "github"
},
"original": {
"owner": "oxalica",
"repo": "rust-overlay",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

36
flake.nix
View file

@ -1,36 +0,0 @@
{
description = "A very basic flake";
inputs.nixpkgs.url = "github:NixOS/nixpkgs/a3073c49bc0163fea6a121c276f526837672b555";
inputs.cargo2nix = {
# As of 2022-10-18: two small patches over unstable branch, one for clippy and one to fix feature detection
url = "github:Alexis211/cargo2nix/a7a61179b66054904ef6a195d8da736eaaa06c36";
inputs.nixpkgs.follows = "nixpkgs";
};
outputs = { self, nixpkgs, cargo2nix }:
let
pkgs = import nixpkgs {
system = "x86_64-linux";
overlays = [ cargo2nix.overlays.default ];
};
packageFun = import ./Cargo.nix;
rustVersion = "1.63.0";
compile = args: compileMode:
let
packageSet = pkgs.rustBuilder.makePackageSet ({
inherit packageFun rustVersion;
} // args);
in
packageSet.workspace.diplonat {
inherit compileMode;
};
in
{
test.x86_64-linux.diplonat = compile { release = false; } "test";
debug.x86_64-linux.diplonat = compile { release = false; } "build";
packages.x86_64-linux.diplonat = compile { release = true; } "build";
packages.x86_64-linux.default = self.packages.x86_64-linux.diplonat;
};
}

5
src/config/mod.rs
View file

@ -3,12 +3,11 @@ mod options;
mod options_test; mod options_test;
mod runtime; mod runtime;
pub use options::{ConfigOpts, ConfigOptsBase, ConfigOptsConsul}; pub use options::{ConfigOpts, ConfigOptsAcme, ConfigOptsBase, ConfigOptsConsul};
pub use runtime::{ pub use runtime::{
RuntimeConfig, RuntimeConfigConsul, RuntimeConfigFirewall, RuntimeConfigIgd, RuntimeConfigStun, RuntimeConfig, RuntimeConfigAcme, RuntimeConfigConsul, RuntimeConfigFirewall, RuntimeConfigIgd,
}; };
pub const EXPIRATION_TIME: u16 = 300; pub const EXPIRATION_TIME: u16 = 300;
pub const REFRESH_TIME: u16 = 60; pub const REFRESH_TIME: u16 = 60;
pub const CONSUL_URL: &str = "http://127.0.0.1:8500"; pub const CONSUL_URL: &str = "http://127.0.0.1:8500";
pub const STUN_SERVER: &str = "stun.nextcloud.com:443";

97
src/config/options.rs
View file

@ -11,67 +11,68 @@ use crate::config::RuntimeConfig;
/// Base configuration options /// Base configuration options
#[derive(Clone, Default, Deserialize)] #[derive(Clone, Default, Deserialize)]
pub struct ConfigOptsBase { pub struct ConfigOptsBase {
/// This node's private IP address [default: None] /// This node's private IP address [default: None]
pub private_ip: Option<String>, pub private_ip: Option<String>,
/// Expiration time for IGD rules [default: 60] /// Expiration time for IGD rules [default: 60]
pub expiration_time: Option<u16>, pub expiration_time: Option<u16>,
/// Refresh time for IGD and Firewall rules [default: 300] /// Refresh time for IGD and Firewall rules [default: 300]
pub refresh_time: Option<u16>, pub refresh_time: Option<u16>,
/// STUN server [default: stun.nextcloud.com:443] }
pub stun_server: Option<String>,
/// IPv6-only mode (disables IGD, IPv4 firewall and IPv4 address autodiscovery) [default: false] /// ACME configuration options
#[serde(default)] #[derive(Clone, Default, Deserialize)]
pub ipv6_only: bool, pub struct ConfigOptsAcme {
/// Whether ACME is enabled [default: false]
#[serde(default)]
pub enable: bool,
/// The default domain holder's e-mail [default: None]
pub email: Option<String>,
} }
/// Consul configuration options /// Consul configuration options
#[derive(Clone, Default, Deserialize)] #[derive(Clone, Default, Deserialize)]
pub struct ConfigOptsConsul { pub struct ConfigOptsConsul {
/// Consul's node name [default: None] /// Consul's node name [default: None]
pub node_name: Option<String>, pub node_name: Option<String>,
/// Consul's REST URL [default: "http://127.0.0.1:8500"] /// Consul's REST URL [default: "http://127.0.0.1:8500"]
pub url: Option<String>, pub url: Option<String>,
/// Consul's CA certificate [default: None]
pub ca_cert: Option<String>,
/// Skip TLS verification for Consul server [default: false]
#[serde(default)]
pub tls_skip_verify: bool,
/// Consul's client certificate [default: None]
pub client_cert: Option<String>,
/// Consul's client key [default: None]
pub client_key: Option<String>,
} }
/// Model of all potential configuration options /// Model of all potential configuration options
pub struct ConfigOpts { pub struct ConfigOpts {
pub base: ConfigOptsBase, pub base: ConfigOptsBase,
pub consul: ConfigOptsConsul, pub acme: ConfigOptsAcme,
pub consul: ConfigOptsConsul,
} }
impl ConfigOpts { impl ConfigOpts {
pub fn from_env() -> Result<RuntimeConfig> { pub fn from_env() -> Result<RuntimeConfig> {
let base: ConfigOptsBase = envy::prefixed("DIPLONAT_").from_env()?; let base: ConfigOptsBase = envy::prefixed("DIPLONAT_").from_env()?;
let consul: ConfigOptsConsul = envy::prefixed("DIPLONAT_CONSUL_").from_env()?; let consul: ConfigOptsConsul = envy::prefixed("DIPLONAT_CONSUL_").from_env()?;
let acme: ConfigOptsAcme = envy::prefixed("DIPLONAT_ACME_").from_env()?;
RuntimeConfig::new(Self { RuntimeConfig::new(Self {
base: base, base: base,
consul: consul, consul: consul,
}) acme: acme,
} })
}
// Currently only used in tests // Currently only used in tests
#[cfg(test)] #[allow(dead_code)]
pub fn from_iter<Iter: Clone>(iter: Iter) -> Result<RuntimeConfig> pub fn from_iter<Iter: Clone>(iter: Iter) -> Result<RuntimeConfig>
where where
Iter: IntoIterator<Item = (String, String)>, Iter: IntoIterator<Item = (String, String)>,
{ {
let base: ConfigOptsBase = envy::prefixed("DIPLONAT_").from_iter(iter.clone())?; let base: ConfigOptsBase = envy::prefixed("DIPLONAT_").from_iter(iter.clone())?;
let consul: ConfigOptsConsul = let consul: ConfigOptsConsul = envy::prefixed("DIPLONAT_CONSUL_").from_iter(iter.clone())?;
envy::prefixed("DIPLONAT_CONSUL_").from_iter(iter.clone())?; let acme: ConfigOptsAcme = envy::prefixed("DIPLONAT_ACME_").from_iter(iter.clone())?;
RuntimeConfig::new(Self { RuntimeConfig::new(Self {
base: base, base: base,
consul: consul, consul: consul,
}) acme: acme,
} })
}
} }

178
src/config/options_test.rs
View file

@ -1,4 +1,5 @@
use std::{collections::HashMap, time::Duration}; use std::collections::HashMap;
use std::time::Duration;
use crate::config::*; use crate::config::*;
@ -9,111 +10,120 @@ use crate::config::*;
// This is why we only test ConfigOpts::from_iter(iter). // This is why we only test ConfigOpts::from_iter(iter).
fn minimal_valid_options() -> HashMap<String, String> { fn minimal_valid_options() -> HashMap<String, String> {
let mut opts = HashMap::new(); let mut opts = HashMap::new();
opts.insert( opts.insert(
"DIPLONAT_CONSUL_NODE_NAME".to_string(), "DIPLONAT_PRIVATE_IP".to_string(),
"consul_node".to_string(), "172.123.43.555".to_string(),
); );
opts opts.insert(
"DIPLONAT_CONSUL_NODE_NAME".to_string(),
"consul_node".to_string(),
);
opts
} }
fn all_valid_options() -> HashMap<String, String> { fn all_valid_options() -> HashMap<String, String> {
let mut opts = minimal_valid_options(); let mut opts = minimal_valid_options();
opts.insert("DIPLONAT_EXPIRATION_TIME".to_string(), "30".to_string()); opts.insert("DIPLONAT_EXPIRATION_TIME".to_string(), "30".to_string());
opts.insert( opts.insert("DIPLONAT_REFRESH_TIME".to_string(), "10".to_string());
"DIPLONAT_STUN_SERVER".to_string(), opts.insert(
"stun.nextcloud.com:443".to_string(), "DIPLONAT_CONSUL_URL".to_string(),
); "http://127.0.0.1:9999".to_string(),
opts.insert( );
"DIPLONAT_PRIVATE_IP".to_string(), opts.insert("DIPLONAT_ACME_ENABLE".to_string(), "true".to_string());
"172.123.43.55".to_string(), opts.insert(
); "DIPLONAT_ACME_EMAIL".to_string(),
opts.insert("DIPLONAT_REFRESH_TIME".to_string(), "10".to_string()); "bozo@bozo.net".to_string(),
opts.insert( );
"DIPLONAT_CONSUL_URL".to_string(), opts
"http://127.0.0.1:9999".to_string(),
);
opts.insert("DIPLONAT_ACME_ENABLE".to_string(), "true".to_string());
opts.insert(
"DIPLONAT_ACME_EMAIL".to_string(),
"bozo@bozo.net".to_string(),
);
opts
} }
#[test] #[test]
#[should_panic] #[should_panic]
fn err_empty_env() { fn err_empty_env() {
std::env::remove_var("DIPLONAT_CONSUL_NODE_NAME"); std::env::remove_var("DIPLONAT_PRIVATE_IP");
ConfigOpts::from_env().unwrap(); std::env::remove_var("DIPLONAT_CONSUL_NODE_NAME");
ConfigOpts::from_env().unwrap();
} }
#[test] #[test]
fn ok_from_iter_minimal_valid_options() { fn ok_from_iter_minimal_valid_options() {
let opts = minimal_valid_options(); let opts = minimal_valid_options();
let rt_config = ConfigOpts::from_iter(opts.clone()).unwrap(); let rt_config = ConfigOpts::from_iter(opts.clone()).unwrap();
assert_eq!( assert!(rt_config.acme.is_none());
&rt_config.consul.node_name, assert_eq!(
opts.get(&"DIPLONAT_CONSUL_NODE_NAME".to_string()).unwrap() &rt_config.consul.node_name,
); opts.get(&"DIPLONAT_CONSUL_NODE_NAME".to_string()).unwrap()
assert_eq!(rt_config.consul.url, CONSUL_URL.to_string()); );
assert_eq!( assert_eq!(rt_config.consul.url, CONSUL_URL.to_string());
rt_config.firewall.refresh_time, assert_eq!(
Duration::from_secs(REFRESH_TIME.into()) rt_config.firewall.refresh_time,
); Duration::from_secs(REFRESH_TIME.into())
let igd = rt_config.igd.unwrap(); );
assert!(igd.private_ip.is_none()); assert_eq!(
assert_eq!( &rt_config.igd.private_ip,
igd.expiration_time, opts.get(&"DIPLONAT_PRIVATE_IP".to_string()).unwrap()
Duration::from_secs(EXPIRATION_TIME.into()) );
); assert_eq!(
assert_eq!(igd.refresh_time, Duration::from_secs(REFRESH_TIME.into())); rt_config.igd.expiration_time,
Duration::from_secs(EXPIRATION_TIME.into())
);
assert_eq!(
rt_config.igd.refresh_time,
Duration::from_secs(REFRESH_TIME.into())
);
} }
#[test] #[test]
#[should_panic] #[should_panic]
fn err_from_iter_invalid_refresh_time() { fn err_from_iter_invalid_refresh_time() {
let mut opts = minimal_valid_options(); let mut opts = minimal_valid_options();
opts.insert("DIPLONAT_EXPIRATION_TIME".to_string(), "60".to_string()); opts.insert("DIPLONAT_EXPIRATION_TIME".to_string(), "60".to_string());
opts.insert("DIPLONAT_REFRESH_TIME".to_string(), "60".to_string()); opts.insert("DIPLONAT_REFRESH_TIME".to_string(), "60".to_string());
ConfigOpts::from_iter(opts).unwrap(); ConfigOpts::from_iter(opts).unwrap();
} }
#[test] #[test]
fn ok_from_iter_all_valid_options() { fn ok_from_iter_all_valid_options() {
let opts = all_valid_options(); let opts = all_valid_options();
let rt_config = ConfigOpts::from_iter(opts.clone()).unwrap(); let rt_config = ConfigOpts::from_iter(opts.clone()).unwrap();
let expiration_time = Duration::from_secs( let expiration_time = Duration::from_secs(
opts.get(&"DIPLONAT_EXPIRATION_TIME".to_string()) opts
.unwrap() .get(&"DIPLONAT_EXPIRATION_TIME".to_string())
.parse::<u64>() .unwrap()
.unwrap() .parse::<u64>()
.into(), .unwrap()
); .into(),
let refresh_time = Duration::from_secs( );
opts.get(&"DIPLONAT_REFRESH_TIME".to_string()) let refresh_time = Duration::from_secs(
.unwrap() opts
.parse::<u64>() .get(&"DIPLONAT_REFRESH_TIME".to_string())
.unwrap() .unwrap()
.into(), .parse::<u64>()
); .unwrap()
.into(),
);
assert_eq!( assert!(rt_config.acme.is_some());
&rt_config.consul.node_name, assert_eq!(
opts.get(&"DIPLONAT_CONSUL_NODE_NAME".to_string()).unwrap() &rt_config.acme.unwrap().email,
); opts.get(&"DIPLONAT_ACME_EMAIL".to_string()).unwrap()
assert_eq!( );
&rt_config.consul.url, assert_eq!(
opts.get(&"DIPLONAT_CONSUL_URL".to_string()).unwrap() &rt_config.consul.node_name,
); opts.get(&"DIPLONAT_CONSUL_NODE_NAME".to_string()).unwrap()
assert_eq!(rt_config.firewall.refresh_time, refresh_time); );
let igd = rt_config.igd.unwrap(); assert_eq!(
assert_eq!( &rt_config.consul.url,
&igd.private_ip.unwrap().to_string(), opts.get(&"DIPLONAT_CONSUL_URL".to_string()).unwrap()
opts.get(&"DIPLONAT_PRIVATE_IP".to_string()).unwrap() );
); assert_eq!(rt_config.firewall.refresh_time, refresh_time);
assert_eq!(igd.expiration_time, expiration_time); assert_eq!(
assert_eq!(igd.refresh_time, refresh_time); &rt_config.igd.private_ip,
opts.get(&"DIPLONAT_PRIVATE_IP".to_string()).unwrap()
);
assert_eq!(rt_config.igd.expiration_time, expiration_time);
assert_eq!(rt_config.igd.refresh_time, refresh_time);
} }

230
src/config/runtime.rs
View file

@ -1,191 +1,119 @@
use std::fs::File;
use std::io::Read;
use std::net::{Ipv4Addr, SocketAddr, ToSocketAddrs};
use std::time::Duration; use std::time::Duration;
use anyhow::{anyhow, bail, Context, Result}; use anyhow::{anyhow, Result};
use crate::config::{ConfigOpts, ConfigOptsBase, ConfigOptsConsul}; use crate::config::{ConfigOpts, ConfigOptsAcme, ConfigOptsBase, ConfigOptsConsul};
// This code is inspired by the Trunk crate (https://github.com/thedodd/trunk) // This code is inspired by the Trunk crate (https://github.com/thedodd/trunk)
// In this file, we take ConfigOpts and transform them into ready-to-use // In this file, we take ConfigOpts and transform them into ready-to-use RuntimeConfig.
// RuntimeConfig. We apply default values and business logic. // We apply default values and business logic.
#[derive(Debug)]
pub struct RuntimeConfigAcme {
pub email: String,
}
#[derive(Debug)] #[derive(Debug)]
pub struct RuntimeConfigConsul { pub struct RuntimeConfigConsul {
pub node_name: String, pub node_name: String,
pub url: String, pub url: String,
pub tls: Option<(Option<reqwest::Certificate>, bool, reqwest::Identity)>,
} }
#[derive(Debug)] #[derive(Debug)]
pub struct RuntimeConfigFirewall { pub struct RuntimeConfigFirewall {
pub ipv6_only: bool, pub refresh_time: Duration,
pub refresh_time: Duration,
} }
#[derive(Debug)] #[derive(Debug)]
pub struct RuntimeConfigIgd { pub struct RuntimeConfigIgd {
pub private_ip: Option<Ipv4Addr>, pub private_ip: String,
pub expiration_time: Duration, pub expiration_time: Duration,
pub refresh_time: Duration, pub refresh_time: Duration,
}
#[derive(Debug)]
pub struct RuntimeConfigStun {
pub stun_server_v4: Option<SocketAddr>,
pub stun_server_v6: SocketAddr,
pub refresh_time: Duration,
} }
#[derive(Debug)] #[derive(Debug)]
pub struct RuntimeConfig { pub struct RuntimeConfig {
pub consul: RuntimeConfigConsul, pub acme: Option<RuntimeConfigAcme>,
pub firewall: RuntimeConfigFirewall, pub consul: RuntimeConfigConsul,
pub igd: Option<RuntimeConfigIgd>, pub firewall: RuntimeConfigFirewall,
pub stun: RuntimeConfigStun, pub igd: RuntimeConfigIgd,
} }
impl RuntimeConfig { impl RuntimeConfig {
pub fn new(opts: ConfigOpts) -> Result<Self> { pub fn new(opts: ConfigOpts) -> Result<Self> {
let consul = RuntimeConfigConsul::new(opts.consul)?; let acme = RuntimeConfigAcme::new(opts.acme.clone())?;
let firewall = RuntimeConfigFirewall::new(&opts.base)?; let consul = RuntimeConfigConsul::new(opts.consul.clone())?;
let igd = match opts.base.ipv6_only { let firewall = RuntimeConfigFirewall::new(opts.base.clone())?;
false => Some(RuntimeConfigIgd::new(&opts.base)?), let igd = RuntimeConfigIgd::new(opts.base.clone())?;
true => None,
};
let stun = RuntimeConfigStun::new(&opts.base)?;
Ok(Self { Ok(Self {
consul, acme,
firewall, consul,
igd, firewall,
stun, igd,
}) })
}
}
impl RuntimeConfigAcme {
pub fn new(opts: ConfigOptsAcme) -> Result<Option<Self>> {
if !opts.enable {
return Ok(None);
} }
let email = opts.email.expect(
"'DIPLONAT_ACME_EMAIL' environment variable is required \
if 'DIPLONAT_ACME_ENABLE' == 'true'",
);
Ok(Some(Self { email }))
}
} }
impl RuntimeConfigConsul { impl RuntimeConfigConsul {
pub(super) fn new(opts: ConfigOptsConsul) -> Result<Self> { pub(super) fn new(opts: ConfigOptsConsul) -> Result<Self> {
let node_name = opts let node_name = opts
.node_name .node_name
.expect("'DIPLONAT_CONSUL_NODE_NAME' environment variable is required"); .expect("'DIPLONAT_CONSUL_NODE_NAME' environment variable is required");
let url = opts.url.unwrap_or(super::CONSUL_URL.to_string()); let url = opts.url.unwrap_or(super::CONSUL_URL.to_string());
let tls = match (&opts.client_cert, &opts.client_key) { Ok(Self { node_name, url })
(Some(client_cert), Some(client_key)) => { }
let cert = match &opts.ca_cert {
Some(ca_cert) => {
let mut ca_cert_buf = vec![];
File::open(ca_cert)?.read_to_end(&mut ca_cert_buf)?;
Some(reqwest::Certificate::from_pem(&ca_cert_buf[..])?)
}
None => None,
};
let mut client_cert_buf = vec![];
File::open(client_cert)?.read_to_end(&mut client_cert_buf)?;
let mut client_key_buf = vec![];
File::open(client_key)?.read_to_end(&mut client_key_buf)?;
let ident = reqwest::Identity::from_pem(
&[&client_cert_buf[..], &client_key_buf[..]].concat()[..],
)?;
Some((cert, opts.tls_skip_verify, ident))
}
(None, None) => None,
_ => bail!("Incomplete TLS configuration parameters"),
};
Ok(Self {
node_name,
url,
tls,
})
}
} }
impl RuntimeConfigFirewall { impl RuntimeConfigFirewall {
pub(super) fn new(opts: &ConfigOptsBase) -> Result<Self> { pub(super) fn new(opts: ConfigOptsBase) -> Result<Self> {
let refresh_time = let refresh_time = Duration::from_secs(opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
Duration::from_secs(opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
Ok(Self { Ok(Self { refresh_time })
refresh_time, }
ipv6_only: opts.ipv6_only,
})
}
} }
impl RuntimeConfigIgd { impl RuntimeConfigIgd {
pub(super) fn new(opts: &ConfigOptsBase) -> Result<Self> { pub(super) fn new(opts: ConfigOptsBase) -> Result<Self> {
let private_ip = opts let private_ip = opts
.private_ip .private_ip
.as_ref() .expect("'DIPLONAT_PRIVATE_IP' environment variable is required");
.map(|x| x.parse()) let expiration_time = Duration::from_secs(
.transpose() opts
.context("parse private_ip")?; .expiration_time
let expiration_time = Duration::from_secs( .unwrap_or(super::EXPIRATION_TIME)
opts.expiration_time .into(),
.unwrap_or(super::EXPIRATION_TIME) );
.into(), let refresh_time = Duration::from_secs(opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
);
let refresh_time =
Duration::from_secs(opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
if refresh_time.as_secs() * 2 > expiration_time.as_secs() { if refresh_time.as_secs() * 2 > expiration_time.as_secs() {
return Err(anyhow!( return Err(anyhow!(
"IGD expiration time (currently: {}s) must be at least twice bigger than refresh time \ "IGD expiration time (currently: {}s) must be at least twice bigger than refresh time (currently: {}s)",
(currently: {}s)", expiration_time.as_secs(),
expiration_time.as_secs(), refresh_time.as_secs()));
refresh_time.as_secs()
));
}
Ok(Self {
private_ip,
expiration_time,
refresh_time,
})
}
}
impl RuntimeConfigStun {
pub(super) fn new(opts: &ConfigOptsBase) -> Result<Self> {
let mut stun_server_v4 = None;
let mut stun_server_v6 = None;
for addr in opts
.stun_server
.as_deref()
.unwrap_or(super::STUN_SERVER)
.to_socket_addrs()?
{
if addr.is_ipv4() {
stun_server_v4 = Some(addr);
}
if addr.is_ipv6() {
stun_server_v6 = Some(addr);
}
}
let refresh_time =
Duration::from_secs(opts.refresh_time.unwrap_or(super::REFRESH_TIME).into());
let stun_server_v4 = match opts.ipv6_only {
false => Some(
stun_server_v4.ok_or(anyhow!("Unable to resolve STUN server's IPv4 address"))?,
),
true => None,
};
Ok(Self {
stun_server_v4,
stun_server_v6: stun_server_v6
.ok_or(anyhow!("Unable to resolve STUN server's IPv6 address"))?,
refresh_time,
})
} }
Ok(Self {
private_ip,
expiration_time,
refresh_time,
})
}
} }

97
src/consul.rs
View file

@ -1,86 +1,49 @@
use std::collections::HashMap;
use anyhow::{anyhow, Result}; use anyhow::{anyhow, Result};
use serde::{Deserialize, Serialize}; use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use crate::config::RuntimeConfigConsul;
#[derive(Serialize, Deserialize, Debug)] #[derive(Serialize, Deserialize, Debug)]
pub struct ServiceEntry { pub struct ServiceEntry {
#[serde(rename = "Tags")] pub Tags: Vec<String>,
pub tags: Vec<String>,
} }
#[derive(Serialize, Deserialize, Debug, Default)] #[derive(Serialize, Deserialize, Debug)]
pub struct CatalogNode { pub struct CatalogNode {
#[serde(rename = "Services")] pub Services: HashMap<String, ServiceEntry>,
pub services: HashMap<String, ServiceEntry>,
} }
pub struct Consul { pub struct Consul {
client: reqwest::Client, client: reqwest::Client,
url: String, url: String,
idx: Option<u64>, idx: Option<u64>,
} }
impl Consul { impl Consul {
pub fn new(config: &RuntimeConfigConsul) -> Self { pub fn new(url: &str) -> Self {
let client = if let Some((ca, skip_verify, ident)) = config.tls.clone() { return Self {
if skip_verify { client: reqwest::Client::new(),
reqwest::Client::builder() url: url.to_string(),
.use_rustls_tls() idx: None,
.danger_accept_invalid_certs(true) };
.identity(ident) }
.build()
.expect("Unable to build reqwest client")
} else if let Some(ca) = ca {
reqwest::Client::builder()
.use_rustls_tls()
.add_root_certificate(ca)
.identity(ident)
.build()
.expect("Unable to build reqwest client")
} else {
reqwest::Client::builder()
.use_rustls_tls()
.identity(ident)
.build()
.expect("Unable to build reqwest client")
}
} else {
reqwest::Client::new()
};
return Self {
client,
url: config.url.clone(),
idx: None,
};
}
pub fn watch_node_reset(&mut self) -> () { pub fn watch_node_reset(&mut self) -> () {
self.idx = None; self.idx = None;
} }
pub async fn watch_node(&mut self, host: &str) -> Result<CatalogNode> { pub async fn watch_node(&mut self, host: &str) -> Result<CatalogNode> {
let url = match self.idx { let url = match self.idx {
Some(i) => format!("{}/v1/catalog/node/{}?index={}", self.url, host, i), Some(i) => format!("{}/v1/catalog/node/{}?index={}", self.url, host, i),
None => format!("{}/v1/catalog/node/{}", self.url, host), None => format!("{}/v1/catalog/node/{}", self.url, host),
}; };
let http = self.client.get(&url).send().await?; let http = self.client.get(&url).send().await?;
self.idx = match http.headers().get("X-Consul-Index") { self.idx = match http.headers().get("X-Consul-Index") {
Some(v) => Some(v.to_str()?.parse::<u64>()?), Some(v) => Some(v.to_str()?.parse::<u64>()?),
None => return Err(anyhow!("X-Consul-Index header not found")), None => return Err(anyhow!("X-Consul-Index header not found")),
}; };
let resp: Option<CatalogNode> = http.json().await?; let resp: CatalogNode = http.json().await?;
return Ok(resp.unwrap_or_default()); return Ok(resp);
} }
pub async fn kv_put(&self, key: &str, bytes: Vec<u8>) -> Result<()> {
let url = format!("{}/v1/kv/{}", self.url, key);
let http = self.client.put(&url).body(bytes).send().await?;
http.error_for_status()?;
Ok(())
}
} }

161
src/consul_actor.rs
View file

@ -1,120 +1,117 @@
use std::{cmp, collections::HashSet, time::Duration}; use crate::consul;
use crate::messages;
use anyhow::Result; use anyhow::Result;
use log::*; use log::*;
use serde::{Deserialize, Serialize}; use serde::{Deserialize, Serialize};
use serde_lexpr::{error, from_str}; use serde_lexpr::{error, from_str};
use tokio::{sync::watch, time::sleep}; use std::cmp;
use std::collections::HashSet;
use crate::config::RuntimeConfigConsul; use std::time::Duration;
use crate::{consul, messages}; use tokio::sync::watch;
use tokio::time::delay_for;
#[derive(Serialize, Deserialize, Debug)] #[derive(Serialize, Deserialize, Debug)]
pub enum DiplonatParameter { pub enum DiplonatParameter {
#[serde(rename = "tcp_port")] tcp_port(HashSet<u16>),
TcpPort(HashSet<u16>), udp_port(HashSet<u16>),
#[serde(rename = "udp_port")]
UdpPort(HashSet<u16>),
} }
#[derive(Serialize, Deserialize, Debug)] #[derive(Serialize, Deserialize, Debug)]
pub enum DiplonatConsul { pub enum DiplonatConsul {
#[serde(rename = "diplonat")] diplonat(Vec<DiplonatParameter>),
Diplonat(Vec<DiplonatParameter>),
} }
pub struct ConsulActor { pub struct ConsulActor {
pub rx_open_ports: watch::Receiver<messages::PublicExposedPorts>, pub rx_open_ports: watch::Receiver<messages::PublicExposedPorts>,
consul: consul::Consul, consul: consul::Consul,
node: String, node: String,
retries: u32, retries: u32,
tx_open_ports: watch::Sender<messages::PublicExposedPorts>, tx_open_ports: watch::Sender<messages::PublicExposedPorts>,
} }
fn retry_to_time(retries: u32, max_time: Duration) -> Duration { fn retry_to_time(retries: u32, max_time: Duration) -> Duration {
// 1.2^x seems to be a good value to exponentially increase time at a good pace // 1.2^x seems to be a good value to exponentially increase time at a good pace
// eg. 1.2^32 = 341 seconds ~= 5 minutes - ie. after 32 retries we wait 5 // eg. 1.2^32 = 341 seconds ~= 5 minutes - ie. after 32 retries we wait 5 minutes
// minutes return Duration::from_secs(cmp::min(
return Duration::from_secs(cmp::min( max_time.as_secs(),
max_time.as_secs(), 1.2f64.powf(retries as f64) as u64,
1.2f64.powf(retries as f64) as u64, ));
));
} }
fn to_parameters(catalog: &consul::CatalogNode) -> Vec<DiplonatConsul> { fn to_parameters(catalog: &consul::CatalogNode) -> Vec<DiplonatConsul> {
let mut r = Vec::new(); let mut r = Vec::new();
for (_, service_info) in &catalog.services { for (_, service_info) in &catalog.Services {
for tag in &service_info.tags { for tag in &service_info.Tags {
let diplo_conf: error::Result<DiplonatConsul> = from_str(tag); let diplo_conf: error::Result<DiplonatConsul> = from_str(tag);
match diplo_conf { match diplo_conf {
Ok(conf) => r.push(conf), Ok(conf) => r.push(conf),
Err(e) => debug!("Failed to parse entry {}. {}", tag, e), Err(e) => debug!("Failed to parse entry {}. {}", tag, e),
}; };
}
} }
}
return r; return r;
} }
fn to_open_ports(params: &Vec<DiplonatConsul>) -> messages::PublicExposedPorts { fn to_open_ports(params: &Vec<DiplonatConsul>) -> messages::PublicExposedPorts {
let mut op = messages::PublicExposedPorts { let mut op = messages::PublicExposedPorts {
tcp_ports: HashSet::new(), tcp_ports: HashSet::new(),
udp_ports: HashSet::new(), udp_ports: HashSet::new(),
}; };
for conf in params { for conf in params {
let DiplonatConsul::Diplonat(c) = conf; let DiplonatConsul::diplonat(c) = conf;
for parameter in c { for parameter in c {
match parameter { match parameter {
DiplonatParameter::TcpPort(p) => op.tcp_ports.extend(p), DiplonatParameter::tcp_port(p) => op.tcp_ports.extend(p),
DiplonatParameter::UdpPort(p) => op.udp_ports.extend(p), DiplonatParameter::udp_port(p) => op.udp_ports.extend(p),
}; };
}
} }
}
return op; return op;
} }
impl ConsulActor { impl ConsulActor {
pub fn new(config: &RuntimeConfigConsul, node: &str) -> Self { pub fn new(url: &str, node: &str) -> Self {
let (tx, rx) = watch::channel(messages::PublicExposedPorts { let (tx, rx) = watch::channel(messages::PublicExposedPorts {
tcp_ports: HashSet::new(), tcp_ports: HashSet::new(),
udp_ports: HashSet::new(), udp_ports: HashSet::new(),
}); });
return Self { return Self {
consul: consul::Consul::new(config), consul: consul::Consul::new(url),
rx_open_ports: rx, rx_open_ports: rx,
tx_open_ports: tx, tx_open_ports: tx,
node: node.to_string(), node: node.to_string(),
retries: 0, retries: 0,
}; };
} }
pub async fn listen(&mut self) -> Result<()> { pub async fn listen(&mut self) -> Result<()> {
loop { loop {
let catalog = match self.consul.watch_node(&self.node).await { let catalog = match self.consul.watch_node(&self.node).await {
Ok(c) => c, Ok(c) => c,
Err(e) => { Err(e) => {
self.consul.watch_node_reset(); self.consul.watch_node_reset();
self.retries = cmp::min(std::u32::MAX - 1, self.retries) + 1; self.retries = cmp::min(std::u32::MAX - 1, self.retries) + 1;
let will_retry_in = retry_to_time(self.retries, Duration::from_secs(600)); let will_retry_in = retry_to_time(self.retries, Duration::from_secs(600));
error!( error!(
"Failed to query consul. Will retry in {}s. {}", "Failed to query consul. Will retry in {}s. {}",
will_retry_in.as_secs(), will_retry_in.as_secs(),
e e
); );
sleep(will_retry_in).await; delay_for(will_retry_in).await;
continue; continue;
}
};
self.retries = 0;
let msg = to_open_ports(&to_parameters(&catalog));
debug!("Extracted configuration: {:#?}", msg);
self.tx_open_ports.send(msg)?;
} }
};
self.retries = 0;
let msg = to_open_ports(&to_parameters(&catalog));
debug!("Extracted configuration: {:#?}", msg);
self.tx_open_ports.broadcast(msg)?;
} }
}
} }

98
src/diplonat.rs
View file

@ -1,78 +1,50 @@
use anyhow::{Context, Result}; use anyhow::Result;
use futures::future::FutureExt;
use tokio::try_join; use tokio::try_join;
use crate::{ use crate::config::ConfigOpts;
config::ConfigOpts, consul_actor::ConsulActor, fw_actor::FirewallActor, igd_actor::IgdActor, use crate::consul_actor::ConsulActor;
stun_actor::StunActor, use crate::fw_actor::FirewallActor;
}; use crate::igd_actor::IgdActor;
pub struct Diplonat { pub struct Diplonat {
consul: ConsulActor, consul: ConsulActor,
firewall: FirewallActor, firewall: FirewallActor,
igd: Option<IgdActor>, igd: IgdActor,
stun: StunActor,
} }
impl Diplonat { impl Diplonat {
pub async fn new() -> Result<Self> { pub async fn new() -> Result<Self> {
let rt_cfg = ConfigOpts::from_env().context("Parse configuration")?; let rt_cfg = ConfigOpts::from_env()?;
println!("{:#?}", rt_cfg); println!("{:#?}", rt_cfg);
let ca = ConsulActor::new(&rt_cfg.consul, &rt_cfg.consul.node_name); let ca = ConsulActor::new(&rt_cfg.consul.url, &rt_cfg.consul.node_name);
let fw = FirewallActor::new( let fw = FirewallActor::new(rt_cfg.firewall.refresh_time, &ca.rx_open_ports).await?;
rt_cfg.firewall.ipv6_only,
rt_cfg.firewall.refresh_time,
&ca.rx_open_ports,
)
.await
.context("Setup fireall actor")?;
let ia = match rt_cfg.igd { let ia = IgdActor::new(
Some(igdc) => Some( &rt_cfg.igd.private_ip,
IgdActor::new( rt_cfg.igd.refresh_time,
igdc.private_ip, rt_cfg.igd.expiration_time,
igdc.refresh_time, &ca.rx_open_ports,
igdc.expiration_time, )
&ca.rx_open_ports, .await?;
)
.await
.context("Setup IGD actor")?,
),
None => None,
};
let sa = StunActor::new(&rt_cfg.consul, &rt_cfg.stun, &rt_cfg.consul.node_name); let ctx = Self {
consul: ca,
igd: ia,
firewall: fw,
};
let ctx = Self { return Ok(ctx);
consul: ca, }
igd: ia,
firewall: fw,
stun: sa,
};
Ok(ctx) pub async fn listen(&mut self) -> Result<()> {
} try_join!(
self.consul.listen(),
self.igd.listen(),
self.firewall.listen()
)?;
pub async fn listen(&mut self) -> Result<()> { return Ok(());
let igd_opt = &mut self.igd; }
try_join!(
self.consul.listen().map(|x| x.context("Run consul actor")),
async {
if let Some(igd) = igd_opt {
igd.listen().await.context("Run IGD actor")
} else {
Ok(())
}
},
self.firewall
.listen()
.map(|x| x.context("Run firewall actor")),
self.stun.listen().map(|x| x.context("Run STUN actor")),
)?;
Ok(())
}
} }

144
src/fw.rs
View file

@ -1,103 +1,97 @@
use std::collections::HashSet; use crate::messages;
use anyhow::{Context, Result}; use anyhow::{Context, Result};
use iptables; use iptables;
use log::*; use log::*;
use regex::Regex; use regex::Regex;
use std::collections::HashSet;
use crate::messages;
pub fn setup(ipt: &iptables::IPTables) -> Result<()> { pub fn setup(ipt: &iptables::IPTables) -> Result<()> {
// ensure we start from a clean state without any rule already set // ensure we start from a clean state without any rule already set
cleanup(ipt)?; cleanup(ipt)?;
info!("{}: creating DIPLONAT chain", ipt.cmd); ipt
ipt.new_chain("filter", "DIPLONAT") .new_chain("filter", "DIPLONAT")
.context("Failed to create new chain")?; .context("Failed to create new chain")?;
ipt.insert_unique("filter", "INPUT", "-j DIPLONAT", 1) ipt
.context("Failed to insert jump rule")?; .insert_unique("filter", "INPUT", "-j DIPLONAT", 1)
.context("Failed to insert jump rule")?;
Ok(()) Ok(())
} }
pub fn open_ports(ipt: &iptables::IPTables, ports: messages::PublicExposedPorts) -> Result<()> { pub fn open_ports(ipt: &iptables::IPTables, ports: messages::PublicExposedPorts) -> Result<()> {
for p in ports.tcp_ports { for p in ports.tcp_ports {
info!("{}: opening TCP port {}", ipt.cmd, p); ipt
ipt.append( .append(
"filter", "filter",
"DIPLONAT", "DIPLONAT",
&format!("-p tcp --dport {} -j ACCEPT", p), &format!("-p tcp --dport {} -j ACCEPT", p),
) )
.context("Failed to insert port rule")?; .context("Failed to insert port rule")?;
} }
for p in ports.udp_ports { for p in ports.udp_ports {
info!("{}: opening UDP port {}", ipt.cmd, p); ipt
ipt.append( .append(
"filter", "filter",
"DIPLONAT", "DIPLONAT",
&format!("-p udp --dport {} -j ACCEPT", p), &format!("-p udp --dport {} -j ACCEPT", p),
) )
.context("Failed to insert port rule")?; .context("Failed to insert port rule")?;
} }
Ok(()) Ok(())
} }
pub fn get_opened_ports(ipt: &iptables::IPTables) -> Result<messages::PublicExposedPorts> { pub fn get_opened_ports(ipt: &iptables::IPTables) -> Result<messages::PublicExposedPorts> {
let mut ports = messages::PublicExposedPorts { let mut ports = messages::PublicExposedPorts {
tcp_ports: HashSet::new(), tcp_ports: HashSet::new(),
udp_ports: HashSet::new(), udp_ports: HashSet::new(),
}; };
let list = ipt.list("filter", "DIPLONAT")?; let list = ipt.list("filter", "DIPLONAT")?;
let re = Regex::new(r"\-A.*? \-p (\w+).*\-\-dport (\d+).*?\-j ACCEPT") let re = Regex::new(r"\-A.*? \-p (\w+).*\-\-dport (\d+).*?\-j ACCEPT")
.context("Regex matching open ports encountered an unexpected rule")?; .context("Regex matching open ports encountered an unexpected rule")?;
for i in list { for i in list {
debug!("{} list DIPLONAT: got {}", ipt.cmd, i); let caps = re.captures(&i);
let caps = re.captures(&i); match caps {
match caps { Some(c) => {
Some(c) => { if let (Some(raw_proto), Some(raw_port)) = (c.get(1), c.get(2)) {
if let (Some(raw_proto), Some(raw_port)) = (c.get(1), c.get(2)) { let proto = String::from(raw_proto.as_str());
let proto = String::from(raw_proto.as_str()); let number = String::from(raw_port.as_str()).parse::<u16>()?;
let number = String::from(raw_port.as_str()).parse::<u16>()?;
if proto == "tcp" || proto == "6" { if proto == "tcp" {
ports.tcp_ports.insert(number); ports.tcp_ports.insert(number);
} else if proto == "udp" || proto == "17" { } else {
ports.udp_ports.insert(number); ports.udp_ports.insert(number);
} else { }
error!("Unexpected protocol in iptables rule: {}", proto); } else {
} error!("Unexpected rule found in DIPLONAT chain")
} else {
error!("Unexpected rule found in DIPLONAT chain")
}
}
_ => {
debug!("{} rule not parsed: {}", ipt.cmd, i);
}
} }
}
_ => {}
} }
}
debug!("{} ports already openned: {:?}", ipt.cmd, ports); Ok(ports)
Ok(ports)
} }
pub fn cleanup(ipt: &iptables::IPTables) -> Result<()> { pub fn cleanup(ipt: &iptables::IPTables) -> Result<()> {
if ipt.chain_exists("filter", "DIPLONAT")? { if ipt.chain_exists("filter", "DIPLONAT")? {
info!("{}: removing old DIPLONAT chain", ipt.cmd); ipt
ipt.flush_chain("filter", "DIPLONAT") .flush_chain("filter", "DIPLONAT")
.context("Failed to flush the DIPLONAT chain")?; .context("Failed to flush the DIPLONAT chain")?;
if ipt.exists("filter", "INPUT", "-j DIPLONAT")? { if ipt.exists("filter", "INPUT", "-j DIPLONAT")? {
ipt.delete("filter", "INPUT", "-j DIPLONAT") ipt
.context("Failed to delete jump rule")?; .delete("filter", "INPUT", "-j DIPLONAT")
} .context("Failed to delete jump rule")?;
ipt.delete_chain("filter", "DIPLONAT")
.context("Failed to delete chain")?;
} }
Ok(()) ipt
.delete_chain("filter", "DIPLONAT")
.context("Failed to delete chain")?;
}
Ok(())
} }

151
src/fw_actor.rs
View file

@ -1,103 +1,86 @@
use std::collections::HashSet;
use anyhow::Result; use anyhow::Result;
use iptables;
use log::*; use log::*;
use tokio::{ use tokio::{
select, select,
sync::watch, sync::watch,
time::{self, Duration}, time::{self, Duration},
}; };
use crate::{fw, messages}; use crate::fw;
use crate::messages;
use iptables;
use std::collections::HashSet;
pub struct FirewallActor { pub struct FirewallActor {
pub ipt_v4: Option<iptables::IPTables>, pub ipt: iptables::IPTables,
pub ipt_v6: iptables::IPTables, rx_ports: watch::Receiver<messages::PublicExposedPorts>,
rx_ports: watch::Receiver<messages::PublicExposedPorts>, last_ports: messages::PublicExposedPorts,
last_ports: messages::PublicExposedPorts, refresh: Duration,
refresh: Duration,
} }
impl FirewallActor { impl FirewallActor {
pub async fn new( pub async fn new(
ipv6_only: bool, _refresh: Duration,
refresh: Duration, rxp: &watch::Receiver<messages::PublicExposedPorts>,
rxp: &watch::Receiver<messages::PublicExposedPorts>, ) -> Result<Self> {
) -> Result<Self> { let ctx = Self {
let ctx = Self { ipt: iptables::new(false)?,
ipt_v4: match ipv6_only { rx_ports: rxp.clone(),
false => Some(iptables::new(false)?), last_ports: messages::PublicExposedPorts::new(),
true => None, refresh: _refresh,
}, };
ipt_v6: iptables::new(true)?,
rx_ports: rxp.clone(),
last_ports: messages::PublicExposedPorts::new(),
refresh,
};
if let Some(ipt_v4) = &ctx.ipt_v4 { fw::setup(&ctx.ipt)?;
fw::setup(ipt_v4)?;
}
fw::setup(&ctx.ipt_v6)?;
return Ok(ctx); return Ok(ctx);
}
pub async fn listen(&mut self) -> Result<()> {
let mut interval = time::interval(self.refresh);
loop {
// 1. Wait for an event
let new_ports = select! {
Some(ports) = self.rx_ports.recv() => Some(ports),
_ = interval.tick() => None,
else => return Ok(()) // Sender dropped, terminate loop.
};
// 2. Update last ports if needed
if let Some(p) = new_ports {
self.last_ports = p;
}
// 3. Update firewall rules
match self.do_fw_update().await {
Ok(()) => debug!("Successfully updated firewall rules"),
Err(e) => error!("An error occured while updating firewall rules. {}", e),
}
} }
}
pub async fn listen(&mut self) -> Result<()> { pub async fn do_fw_update(&self) -> Result<()> {
let mut interval = time::interval(self.refresh); let curr_opened_ports = fw::get_opened_ports(&self.ipt)?;
loop {
// 1. Wait for an event
let new_ports = select! {
_ = self.rx_ports.changed() => Some(self.rx_ports.borrow().clone()),
_ = interval.tick() => None,
else => return Ok(()) // Sender dropped, terminate loop.
};
// 2. Update last ports if needed let diff_tcp = self
if let Some(p) = new_ports { .last_ports
self.last_ports = p; .tcp_ports
} .difference(&curr_opened_ports.tcp_ports)
.copied()
.collect::<HashSet<u16>>();
let diff_udp = self
.last_ports
.udp_ports
.difference(&curr_opened_ports.udp_ports)
.copied()
.collect::<HashSet<u16>>();
// 3. Update firewall rules let ports_to_open = messages::PublicExposedPorts {
match self.do_fw_update().await { tcp_ports: diff_tcp,
Ok(()) => debug!("Successfully updated firewall rules"), udp_ports: diff_udp,
Err(e) => error!("An error occured while updating firewall rules. {}", e), };
}
}
}
pub async fn do_fw_update(&self) -> Result<()> { fw::open_ports(&self.ipt, ports_to_open)?;
if let Some(ipt_v4) = &self.ipt_v4 {
self.do_fw_update_on(ipt_v4).await?;
}
self.do_fw_update_on(&self.ipt_v6).await?;
Ok(())
}
pub async fn do_fw_update_on(&self, ipt: &iptables::IPTables) -> Result<()> { return Ok(());
let curr_opened_ports = fw::get_opened_ports(ipt)?; }
let diff_tcp = self
.last_ports
.tcp_ports
.difference(&curr_opened_ports.tcp_ports)
.copied()
.collect::<HashSet<u16>>();
let diff_udp = self
.last_ports
.udp_ports
.difference(&curr_opened_ports.udp_ports)
.copied()
.collect::<HashSet<u16>>();
let ports_to_open = messages::PublicExposedPorts {
tcp_ports: diff_tcp,
udp_ports: diff_udp,
};
fw::open_ports(ipt, ports_to_open)?;
return Ok(());
}
} }

189
src/igd_actor.rs
View file

@ -1,122 +1,97 @@
use std::net::{Ipv4Addr, SocketAddrV4}; use crate::messages;
use anyhow::{Context, Result}; use anyhow::{Context, Result};
use igd::{aio::*, PortMappingProtocol}; use igd::aio::*;
use igd::PortMappingProtocol;
use log::*; use log::*;
use std::net::SocketAddrV4;
use tokio::{ use tokio::{
select, select,
sync::watch, sync::watch,
time::{self, Duration}, time::{self, Duration},
}; };
use crate::messages;
pub struct IgdActor { pub struct IgdActor {
last_ports: messages::PublicExposedPorts, last_ports: messages::PublicExposedPorts,
rx_ports: watch::Receiver<messages::PublicExposedPorts>, rx_ports: watch::Receiver<messages::PublicExposedPorts>,
gateway: Gateway, gateway: Gateway,
refresh: Duration, refresh: Duration,
expire: Duration, expire: Duration,
private_ip: Ipv4Addr, private_ip: String,
} }
impl IgdActor { impl IgdActor {
pub async fn new( pub async fn new(
priv_ip: Option<Ipv4Addr>, priv_ip: &str,
refresh: Duration, refresh: Duration,
expire: Duration, expire: Duration,
rxp: &watch::Receiver<messages::PublicExposedPorts>, rxp: &watch::Receiver<messages::PublicExposedPorts>,
) -> Result<Self> { ) -> Result<Self> {
let gw = search_gateway(Default::default()) let gw = search_gateway(Default::default())
.await .await
.context("Failed to find IGD gateway")?; .context("Failed to find IGD gateway")?;
info!("IGD gateway: {}", gw); info!("IGD gateway: {}", gw);
let private_ip = if let Some(ip) = priv_ip { let ctx = Self {
info!("Using private IP from config: {}", ip); gateway: gw,
ip rx_ports: rxp.clone(),
} else { private_ip: priv_ip.to_string(),
info!("Trying to automatically detect private IP"); refresh: refresh,
let gwa = gw.addr.ip().octets(); expire: expire,
let cmplen = match gwa { last_ports: messages::PublicExposedPorts::new(),
[192, 168, _, _] => 3, };
[10, _, _, _] => 2,
_ => panic!(
"Gateway IP does not appear to be in a local network ({})",
gw.addr.ip()
),
};
#[allow(unused_parens)]
let private_ip = get_if_addrs::get_if_addrs()?
.into_iter()
.map(|i| i.addr.ip())
.filter_map(|a| match a {
std::net::IpAddr::V4(a4) if a4.octets()[..cmplen] == gwa[..cmplen] => Some(a4),
_ => None,
})
.next()
.expect("No interface has an IP on same subnet as gateway");
info!("Autodetected private IP: {}", private_ip);
private_ip
};
let ctx = Self { return Ok(ctx);
gateway: gw, }
rx_ports: rxp.clone(),
private_ip,
refresh: refresh,
expire: expire,
last_ports: messages::PublicExposedPorts::new(),
};
return Ok(ctx); pub async fn listen(&mut self) -> Result<()> {
let mut interval = time::interval(self.refresh);
loop {
// 1. Wait for an event
let new_ports = select! {
Some(ports) = self.rx_ports.recv() => Some(ports),
_ = interval.tick() => None,
else => return Ok(()) // Sender dropped, terminate loop.
};
// 2. Update last ports if needed
if let Some(p) = new_ports {
self.last_ports = p;
}
// 3. Flush IGD requests
match self.do_igd().await {
Ok(()) => debug!("Successfully updated IGD"),
Err(e) => error!("An error occured while updating IGD. {}", e),
}
}
}
pub async fn do_igd(&self) -> Result<()> {
let actions = [
(PortMappingProtocol::TCP, &self.last_ports.tcp_ports),
(PortMappingProtocol::UDP, &self.last_ports.udp_ports),
];
for (proto, list) in actions.iter() {
for port in *list {
let service_str = format!("{}:{}", self.private_ip, port);
let service = service_str
.parse::<SocketAddrV4>()
.context("Invalid socket address")?;
self
.gateway
.add_port(
*proto,
*port,
service,
self.expire.as_secs() as u32,
"diplonat",
)
.await?;
debug!("IGD request successful for {:#?} {}", proto, service);
}
} }
pub async fn listen(&mut self) -> Result<()> { return Ok(());
let mut interval = time::interval(self.refresh); }
loop {
// 1. Wait for an event
let new_ports = select! {
_ = self.rx_ports.changed() => Some(self.rx_ports.borrow().clone()),
_ = interval.tick() => None,
else => return Ok(()) // Sender dropped, terminate loop.
};
// 2. Update last ports if needed
if let Some(p) = new_ports {
self.last_ports = p;
}
// 3. Flush IGD requests
match self.do_igd().await {
Ok(()) => debug!("Successfully updated IGD"),
Err(e) => error!("An error occured while updating IGD. {}", e),
}
}
}
pub async fn do_igd(&self) -> Result<()> {
let actions = [
(PortMappingProtocol::TCP, &self.last_ports.tcp_ports),
(PortMappingProtocol::UDP, &self.last_ports.udp_ports),
];
for (proto, list) in actions.iter() {
for port in *list {
let service = SocketAddrV4::new(self.private_ip, *port);
self.gateway
.add_port(
*proto,
*port,
service,
self.expire.as_secs() as u32,
"diplonat",
)
.await?;
debug!("IGD request successful for {:#?} {}", proto, service);
}
}
return Ok(());
}
} }

13
src/main.rs
View file

@ -6,20 +6,15 @@ mod fw;
mod fw_actor; mod fw_actor;
mod igd_actor; mod igd_actor;
mod messages; mod messages;
mod stun_actor;
use diplonat::Diplonat; use diplonat::Diplonat;
use log::*; use log::*;
#[tokio::main] #[tokio::main]
async fn main() { async fn main() {
pretty_env_logger::init(); pretty_env_logger::init();
info!("Starting Diplonat"); info!("Starting Diplonat");
Diplonat::new() let mut diplo = Diplonat::new().await.expect("Setup failed");
.await diplo.listen().await.expect("A runtime error occured");
.expect("Setup failed")
.listen()
.await
.expect("A runtime error occured");
} }

16
src/messages.rs
View file

@ -2,15 +2,15 @@ use std::collections::HashSet;
#[derive(Debug, Clone, PartialEq, Eq)] #[derive(Debug, Clone, PartialEq, Eq)]
pub struct PublicExposedPorts { pub struct PublicExposedPorts {
pub tcp_ports: HashSet<u16>, pub tcp_ports: HashSet<u16>,
pub udp_ports: HashSet<u16>, pub udp_ports: HashSet<u16>,
} }
impl PublicExposedPorts { impl PublicExposedPorts {
pub fn new() -> Self { pub fn new() -> Self {
return Self { return Self {
tcp_ports: HashSet::new(), tcp_ports: HashSet::new(),
udp_ports: HashSet::new(), udp_ports: HashSet::new(),
}; };
} }
} }

176
src/stun_actor.rs
View file

@ -1,176 +0,0 @@
use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr};
use std::time::{Duration, SystemTime};
use anyhow::{anyhow, bail, Result};
use log::*;
use serde::{Deserialize, Serialize};
use crate::config::{RuntimeConfigConsul, RuntimeConfigStun};
use crate::consul;
/// If autodiscovery returns None but an address was obtained less than
/// this number of seconds ago (here 15 minutes), we keep that address
/// in the Consul db instead of insterting a None.
const PERSIST_SOME_RESULT_DURATION_SECS: u64 = 900;
pub struct StunActor {
consul: consul::Consul,
refresh_time: Duration,
autodiscovery_v4: StunAutodiscovery,
autodiscovery_v6: StunAutodiscovery,
}
pub struct StunAutodiscovery {
consul_key: String,
is_ipv4: bool,
stun_server: Option<SocketAddr>,
last_result: Option<AutodiscoverResult>,
}
#[derive(Serialize, Deserialize, Debug)]
pub struct AutodiscoverResult {
pub timestamp: u64,
pub address: Option<IpAddr>,
}
impl StunActor {
pub fn new(
consul_config: &RuntimeConfigConsul,
stun_config: &RuntimeConfigStun,
node: &str,
) -> Self {
assert!(stun_config
.stun_server_v4
.map(|x| x.is_ipv4())
.unwrap_or(true));
assert!(stun_config.stun_server_v6.is_ipv6());
let autodiscovery_v4 = StunAutodiscovery {
consul_key: format!("diplonat/autodiscovery/ipv4/{}", node),
is_ipv4: true,
stun_server: stun_config.stun_server_v4,
last_result: None,
};
let autodiscovery_v6 = StunAutodiscovery {
consul_key: format!("diplonat/autodiscovery/ipv6/{}", node),
is_ipv4: false,
stun_server: Some(stun_config.stun_server_v6),
last_result: None,
};
Self {
consul: consul::Consul::new(consul_config),
autodiscovery_v4,
autodiscovery_v6,
refresh_time: stun_config.refresh_time,
}
}
pub async fn listen(&mut self) -> Result<()> {
loop {
if let Err(e) = self.autodiscovery_v4.do_iteration(&self.consul).await {
error!("Unable to autodiscover IPv4 address: {}", e);
}
if let Err(e) = self.autodiscovery_v6.do_iteration(&self.consul).await {
error!("Unable to autodiscover IPv6 address: {}", e);
}
tokio::time::sleep(self.refresh_time).await;
}
}
}
impl StunAutodiscovery {
async fn do_iteration(&mut self, consul: &consul::Consul) -> Result<()> {
let binding_ip = match self.is_ipv4 {
true => IpAddr::V4(Ipv4Addr::UNSPECIFIED), // 0.0.0.0
false => IpAddr::V6(Ipv6Addr::UNSPECIFIED), // [::]
};
let binding_addr = SocketAddr::new(binding_ip, 0);
let discovered_addr = match self.stun_server {
Some(stun_server) => {
assert_eq!(self.is_ipv4, stun_server.is_ipv4());
get_mapped_addr(stun_server, binding_addr)
.await?
.map(|x| x.ip())
}
None => None,
};
let now = timestamp();
if discovered_addr.is_none() {
if let Some(last_result) = &self.last_result {
if last_result.address.is_some()
&& now - last_result.timestamp <= PERSIST_SOME_RESULT_DURATION_SECS
{
// Keep non-None result that was obtained before by not
// writing/taking into account None result.
return Ok(());
}
}
}
let current_result = AutodiscoverResult {
timestamp: now,
address: discovered_addr,
};
let msg = format!(
"STUN autodiscovery result: {} -> {:?}",
self.consul_key, discovered_addr
);
if self.last_result.as_ref().and_then(|x| x.address) != discovered_addr {
info!("{}", msg);
} else {
debug!("{}", msg);
}
consul
.kv_put(&self.consul_key, serde_json::to_vec(&current_result)?)
.await?;
self.last_result = Some(current_result);
Ok(())
}
}
async fn get_mapped_addr(
stun_server: SocketAddr,
binding_addr: SocketAddr,
) -> Result<Option<SocketAddr>> {
use stun_client::*;
let mut client = Client::new(binding_addr, None).await?;
let res = match client.binding_request(stun_server, None).await {
Err(e) => {
info!(
"STUN binding request to {} failed, assuming no address (error: {})",
binding_addr, e
);
return Ok(None);
}
Ok(r) => r,
};
if res.get_class() != Class::SuccessResponse {
bail!("STUN server did not responde with a success response");
}
let xor_mapped_addr = Attribute::get_xor_mapped_address(&res)
.ok_or(anyhow!("no XorMappedAddress found in STUN response"))?;
Ok(Some(xor_mapped_addr))
}
fn timestamp() -> u64 {
SystemTime::now()
.duration_since(SystemTime::UNIX_EPOCH)
.expect("clock error")
.as_secs()
}